Examples with Persistent org.apache.cayenne.Persistent used on opensource projects

Example 6 with Persistent

use of org.apache.cayenne.Persistent in project cayenne by apache.

the class DataDomainQueryAction method interceptRefreshQuery.

/**
 * @since 3.0
 */
private boolean interceptRefreshQuery() {
    if (query instanceof RefreshQuery) {
        RefreshQuery refreshQuery = (RefreshQuery) query;
        if (refreshQuery.isRefreshAll()) {
            // not sending any events - peer contexts will not get refreshed
            if (domain.getSharedSnapshotCache() != null) {
                domain.getSharedSnapshotCache().clear();
            } else {
                // remove snapshots from local ObjectStore only
                context.getObjectStore().getDataRowCache().clear();
            }
            context.getQueryCache().clear();
            GenericResponse response = new GenericResponse();
            response.addUpdateCount(1);
            this.response = response;
            return DONE;
        }
        Collection<Persistent> objects = (Collection<Persistent>) refreshQuery.getObjects();
        if (objects != null && !objects.isEmpty()) {
            Collection<ObjectId> ids = new ArrayList<>(objects.size());
            for (final Persistent object : objects) {
                ids.add(object.getObjectId());
            }
            if (domain.getSharedSnapshotCache() != null) {
                // send an event for removed snapshots
                domain.getSharedSnapshotCache().processSnapshotChanges(context.getObjectStore(), Collections.EMPTY_MAP, Collections.EMPTY_LIST, ids, Collections.EMPTY_LIST);
            } else {
                // remove snapshots from local ObjectStore only
                context.getObjectStore().getDataRowCache().processSnapshotChanges(context.getObjectStore(), Collections.EMPTY_MAP, Collections.EMPTY_LIST, ids, Collections.EMPTY_LIST);
            }
            GenericResponse response = new GenericResponse();
            response.addUpdateCount(1);
            this.response = response;
            return DONE;
        }
        // usually does a cascading refresh
        if (refreshQuery.getQuery() != null) {
            Query cachedQuery = refreshQuery.getQuery();
            String cacheKey = cachedQuery.getMetaData(context.getEntityResolver()).getCacheKey();
            context.getQueryCache().remove(cacheKey);
            this.response = domain.onQuery(context, cachedQuery);
            return DONE;
        }
        // 4. refresh groups...
        if (refreshQuery.getGroupKeys() != null && refreshQuery.getGroupKeys().length > 0) {
            String[] groups = refreshQuery.getGroupKeys();
            for (String group : groups) {
                domain.getQueryCache().removeGroup(group);
            }
            GenericResponse response = new GenericResponse();
            response.addUpdateCount(1);
            this.response = response;
            return DONE;
        }
    }
    return !DONE;
}

Example 7 with Persistent

use of org.apache.cayenne.Persistent in project cayenne by apache.

the class DataDomainUpdateBucket method appendQueriesInternal.

@Override
void appendQueriesInternal(Collection<Query> queries) {
    DataDomainDBDiffBuilder diffBuilder = new DataDomainDBDiffBuilder();
    DataNodeSyncQualifierDescriptor qualifierBuilder = new DataNodeSyncQualifierDescriptor();
    for (DbEntity dbEntity : dbEntities) {
        Collection<DbEntityClassDescriptor> descriptors = descriptorsByDbEntity.get(dbEntity);
        Map<Object, Query> batches = new LinkedHashMap<>();
        for (DbEntityClassDescriptor descriptor : descriptors) {
            ObjEntity entity = descriptor.getEntity();
            diffBuilder.reset(descriptor);
            qualifierBuilder.reset(descriptor);
            boolean isRootDbEntity = entity.getDbEntity() == dbEntity;
            for (Persistent o : objectsByDescriptor.get(descriptor.getClassDescriptor())) {
                ObjectDiff diff = parent.objectDiff(o.getObjectId());
                Map<String, Object> snapshot = diffBuilder.buildDBDiff(diff);
                // check whether MODIFIED object has real db-level modifications
                if (snapshot == null) {
                    continue;
                }
                // after we filtered out "fake" modifications, check if an
                // attempt is made to modify a read only entity
                checkReadOnly(entity);
                Map<String, Object> qualifierSnapshot = qualifierBuilder.createQualifierSnapshot(diff);
                // organize batches by the updated columns + nulls in qualifier
                Set<String> snapshotSet = snapshot.keySet();
                Set<String> nullQualifierNames = new HashSet<>();
                for (Map.Entry<String, Object> entry : qualifierSnapshot.entrySet()) {
                    if (entry.getValue() == null) {
                        nullQualifierNames.add(entry.getKey());
                    }
                }
                List<Set<String>> batchKey = Arrays.asList(snapshotSet, nullQualifierNames);
                UpdateBatchQuery batch = (UpdateBatchQuery) batches.get(batchKey);
                if (batch == null) {
                    batch = new UpdateBatchQuery(dbEntity, qualifierBuilder.getAttributes(), updatedAttributes(dbEntity, snapshot), nullQualifierNames, 10);
                    batch.setUsingOptimisticLocking(qualifierBuilder.isUsingOptimisticLocking());
                    batches.put(batchKey, batch);
                }
                batch.add(qualifierSnapshot, snapshot, o.getObjectId());
                // update replacement id with meaningful PK changes
                if (isRootDbEntity) {
                    Map<String, Object> replacementId = o.getObjectId().getReplacementIdMap();
                    for (DbAttribute pk : dbEntity.getPrimaryKeys()) {
                        String name = pk.getName();
                        if (snapshot.containsKey(name) && !replacementId.containsKey(name)) {
                            replacementId.put(name, snapshot.get(name));
                        }
                    }
                }
            }
        }
        queries.addAll(batches.values());
    }
}

Example 8 with Persistent

use of org.apache.cayenne.Persistent in project cayenne by apache.

the class HierarchicalObjectResolverNode method objectsFromDataRows.

@Override
List<Persistent> objectsFromDataRows(List<? extends DataRow> rows) {
    if (rows == null || rows.size() == 0) {
        return new ArrayList<>(1);
    }
    List<Persistent> results = new ArrayList<>(rows.size());
    for (DataRow row : rows) {
        // determine entity to use
        ClassDescriptor classDescriptor = descriptorResolutionStrategy.descriptorForRow(row);
        // not using DataRow.createObjectId for performance reasons -
        // ObjectResolver
        // has all needed metadata already cached.
        ObjectId anId = createObjectId(row, classDescriptor.getEntity(), null);
        Persistent object = objectFromDataRow(row, anId, classDescriptor);
        if (object == null) {
            throw new CayenneRuntimeException("Can't build Object from row: %s", row);
        }
        // keep the dupe objects (and data rows) around, as there maybe an
        // attached
        // joint prefetch...
        results.add(object);
        node.getParentAttachmentStrategy().linkToParent(row, object);
    }
    // now deal with snapshots
    // TODO: refactoring: dupes will clutter the lists and cause extra
    // processing...
    // removal of dupes happens only downstream, as we need the objects
    // matching
    // fetched rows for joint prefetch resolving... maybe pushback unique
    // and
    // non-unique lists to the "node", instead of returning a single list
    // from this
    // method
    cache.snapshotsUpdatedForObjects(results, rows, refreshObjects);
    return results;
}

Example 9 with Persistent

use of org.apache.cayenne.Persistent in project cayenne by apache.

the class JoinedIdParentAttachementStrategy method linkToParent.

public void linkToParent(DataRow row, Persistent object) {
    Persistent parentObject = null;
    for (ObjEntity entity : sourceEntities) {
        if (entity.isAbstract()) {
            continue;
        }
        ObjectId id = node.getResolver().createObjectId(row, entity, relatedIdPrefix);
        if (id == null) {
            throw new CayenneRuntimeException("Can't build ObjectId from row: %s, entity: %s, prefix: %s", row, entity.getName(), relatedIdPrefix);
        }
        parentObject = (Persistent) graphManager.getNode(id);
        if (parentObject != null) {
            break;
        }
    }
    node.linkToParent(object, parentObject);
}

Example 10 with Persistent

use of org.apache.cayenne.Persistent in project cayenne by apache.

the class ObjectDiff method getArcSnapshotValue.

ObjectId getArcSnapshotValue(String propertyName) {
    Object value = arcSnapshot != null ? arcSnapshot.get(propertyName) : null;
    if (value instanceof Fault) {
        Persistent target = (Persistent) ((Fault) value).resolveFault(object, propertyName);
        value = target != null ? target.getObjectId() : null;
        arcSnapshot.put(propertyName, value);
    }
    return (ObjectId) value;
}